CN101027579A - Illumination system - Google Patents
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- CN101027579A CN101027579A CNA2005800322521A CN200580032252A CN101027579A CN 101027579 A CN101027579 A CN 101027579A CN A2005800322521 A CNA2005800322521 A CN A2005800322521A CN 200580032252 A CN200580032252 A CN 200580032252A CN 101027579 A CN101027579 A CN 101027579A
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
- G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/002—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide, e.g. with collimating, focussing or diverging surfaces
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
- G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/002—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide, e.g. with collimating, focussing or diverging surfaces
- G02B6/0021—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide, e.g. with collimating, focussing or diverging surfaces for housing at least a part of the light source, e.g. by forming holes or recesses
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0066—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form characterised by the light source being coupled to the light guide
- G02B6/0068—Arrangements of plural sources, e.g. multi-colour light sources
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
- G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/0018—Redirecting means on the surface of the light guide
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Optical Elements Other Than Lenses (AREA)
Abstract
An illumination system has a plurality (2) of light-collimating sections (12, 12', 12'') and a light-mixing section (3). The light-collimating sections are arranged substantially parallel to each other along a longitudinal axis (25) of the illumination system. Each of the light-collimating sections is associated with at least one light emitter (R, G, B). Each of the light emitters is being in optical contact with the respective light-collimating section via a dielectric material with a refractive index larger than or equal to 1.3. At a side facing away from the light emitters, the light-collimating sections merge into the lightmixing, the light-collimating sections and the light-mixing section forming one integral part. Light propagation in the light-mixing section is based on total internal reflection and the light-mixing section has a plurality of faces parallel to the longitudinal axis. Preferably, the light-mixing section at a side facing away from the light emitters is provided with a further light-collimating section.
Description
The present invention relates to a kind of illuminator, it comprises a plurality of light-collimating sections and a light-mixing section.
This kind illuminator itself is known for everyone.They are particularly useful for the back lighting of (image) Displaying Meter.As television receiver and televisionmonitor.This kind illuminator is particularly suitable for as non-radiative demonstration and backlight.As be used in LCD in laptop computer or the wireless phone, also claim LCD screen.The Another Application field of illuminator is exactly projects images or a display of television programmes in digital projector or so-called beam instrument among the present invention, film, when video frequency program and DVD or the like as light source.In addition, this kind illuminator also is used for general lighting, as spotlight, and accent light, floodlight, and be used for large tracts of land direct-view luminous plaque, as be used for icon, outline lighting, advertising film.In other was used, the light that this kind illuminator is sent was admitted to light guide therefor, in light transmitting fiber or other beam forming optics device.
In general, this kind illuminator comprises many light emitters, as light emitting diode (LED).LED can be the light source of different base colors, such as well-known red (R), and green (G), blue (B) emitter.In addition, light emitter can be amber, and peony or blue-green are as primary colours.These primary colours can directly be produced by light-emitting diode chip for backlight unit, and also the photoirradiation that is sent by light-emitting diode chip for backlight unit is on phosphor and produce.Under latter event, can be color mixture or white light as a kind of primary colours.In general, the light that is sent by light emitter is mixed in translucent element so that obtain the even distribution of light.Simultaneously, for the specific light emitter, can eliminate the luminous correlativity of illuminator.And, also can adopt the controller that has sensor and some feedback algorithms so that obtain high color accuracy as you know.
The English of Japanese patent application JP-A2002A133932 is translated version and has been described a kind of illuminator, and this system comprises a kind of optical component, and this optical component comprises three light emitting diodes (LED) with different base colors.In known illumination system, be white light basically thereby light mixes the light that illuminator sends.Optical component comprises that three recesses are in order to hold the shell of LED separately.In known illumination system, curved surface is made in the side of optical component, and is that optical component has been equipped with a surface of emission in a side that deviates from LED, and the light that LED sends is launched from exit facet.On the exit facet of optical component, for optical component has been equipped with a scattering surface so that the light that diffusion is penetrated from exit facet.To so build known illumination system, when any one light emission was lost efficacy among three LED, can heavily settle LED like this so that rebuild the white light emission function.
A defective of known illumination system just is that the light that illuminator sends is insufficient evenly.
Purpose of the present invention is exactly to want the above shortcoming of all or part of elimination.According to the present invention, this purpose can reach by a kind of illuminator, and it comprises:
A plurality of light-collimating sections and a light-mixing section;
Light-collimating sections is installed in parallel with each other basically along the longitudinal axis of illuminator;
Each light-collimating sections interrelates with a light emitter at least;
Each light emitter contacts with light-collimating sections light respectively by dielectric material, and the refractive index of dielectric material is more than or equal to 1.3;
At a side place that deviates from light emitter, light-collimating sections is incorporated light-mixing section into;
Light-collimating sections and light-mixing section form an integral body;
The propagation of light in light-mixing section is based on that total internal reflection carries out;
Light-mixing section has a plurality of faces that are parallel to the longitudinal axis.
According to the present invention, illuminator is equipped with integrated optics.The optical device of illuminator comprises single amboceptor part, and it combines two functions: the optical alignment that light emitter is sent; The light that light emitter is sent carries out the space mixing and/or the oblique angle mixes.Many light-collimating sections roughly are installed in parallel with each other along the longitudinal axis of illuminator.Each light-collimating sections and single light emitter or one group of light emitter interrelate.Owing to contact with light is arranged between light-collimating sections separately at light emitter, so reduced reflection loss significantly.Between light emitter and light-collimating sections, load onto the amboceptor material or make it to become the part of the light-collimating sections that directly contacts with light emitter, thereby light emitter is contacted with light is arranged between light-collimating sections separately.Light-collimating sections is preferentially made by on-gaseous light transmission medium material.
At a side place that deviates from light emitter, light-collimating sections is incorporated light-mixing section into so that form an integral body with light-collimating sections.Owing to avoided the boundary between light-collimating sections and the light-mixing section, so the light propagation efficiency in the illuminator of the present invention is just strengthened.In addition, by the section of collimation is made a whole medium part with light-mixing section, just avoided the so-called Fresnel reflection loss of intersection.
Because what light emitter sent only propagates based on total internal reflection (TIR), thereby just can avoid the light loss in the light-collimating sections greatly.In addition, be equipped with a plurality of sides (being roughly the plane) that are parallel to the longitudinal axis, but just mix in the excitation light emission body space of sending light by being the mixed light section.If, so just be unfavorable for that light emitter sends the mixing of light for light-mixing section is equipped with a roughly arc-shaped outer surface.Light-mixing section preferentially disposes four or six sides.
Light-mixing section preferentially disposes four or six sides.People can find to use the side of preferred amount like this to understand space mixing and the space-oblique angle mixing that the excitation light emission body sends light.
The distribution of the light that illuminator of the present invention is sent is uniform basically.According to the size of illuminator, the light that illuminator is sent can be mixed in the mode at oblique angle again in the space mode basically, and the light that illuminator is sent is to collimate (parallel) basically.
Send uniformity of light by illuminator can further being improved to the light-mixing section sizing with advantageous manner.For this reason, a kind of embodiment according to illuminator of the present invention is characterised in that: the length 1ms of the light-mixing section parallel with the longitudinal axis therewith the ratio of the diameter d ms of light-mixing section in following scope:
3.5＝＜(1ms/dms)＜＝10。
Numerical value 1ms/dms is feasible greater than 10, but that the size of light-mixing section will become will be unrealistic.Numerical value 1ms/dms also is feasible less than 3.5.But the space that illuminator is sent light with/or the oblique angle mix and will be limited in quite low value.
A kind of preferred embodiment according to illuminator of the present invention is characterised in that: a part of outside surface of light-collimating sections is reflexive or is equipped with the reflection horizon.Because the light that has had reflection horizon, light emitter to send just is able to propagate on the direction of illuminator light-mixing section.
According to another preferred embodiment of illuminator, the propagation of light in light-collimating sections is based on that total internal reflection carries out.Because the propagation of light in light-collimating sections that light emitter sends is based on total internal reflection, thereby just avoided the light loss in the light-mixing section greatly.In this embodiment, light propagation according to total internal reflection has just been arranged in the whole amboceptor of the light-mixing section that forms illuminator and light-collimating sections.
Can further improve the collimation that illuminator is sent light by the extra means that use makes light emitter send optical alignment.For this reason, a kind of preferred embodiment according to illuminator of the present invention is characterised in that: in a side that deviates from light emitter is that light-mixing section is equipped with an additional light-collimating sections.The beam collimation that this additional light-collimating sections further makes light-mixing section send.
There is several different methods can realize additional light-collimating sections.In first embodiment, additional light-collimating sections comprises a taper shape that expands from light-mixing section.In another embodiment, additional light-collimating sections is a polyhedron so that further strengthen the homogeneity of the light beam that illuminator sends.In another embodiment, additional light-collimating sections roughly is shaped according to compound parabolic concentrator (CPC).Can combine the various embodiment of additional light-collimating sections.
A kind of preferred embodiment according to this aspect illuminator is characterised in that: illuminator comprises light shaping scatterer, especially a holographic diffuser.Holographic diffuser preferentially is a randomized holographic diffuser.The main effect of holographic diffuser is exactly to be used for obtaining uniform space and angular light distribution and COLOR COMPOSITION THROUGH DISTRIBUTION.According to the character of holographic diffuser, the size of holographic diffuser beam formation device is little to be projected on the target to not having thin portion, thereby just has living space and or pitch angle smooth change and uniform beam figure.The secondary action that holographic diffuser becomes be exactly cause illuminator the change of shape of luminous bundle.Scatterer amboceptor preferential and light-mixing section becomes one and is positioned at the outgoing window place of light-mixing section.
These aspects of the present invention and other aspect are illustrated with reference to the embodiment that describes later.
In the accompanying drawings:
Figure 1A is the sectional view according to illuminator first embodiment of the present invention;
Figure 1B and 1C are the skeleton view of two alternative embodiment of the light-collimating sections of illuminator shown in Figure 1A and light-mixing section;
Fig. 2 is the sectional view of illuminator second embodiment according to the present invention;
Figure is schematically, and does not draw in proportion.Particularly some sizes are amplified widely with graphic simplicity.Components and parts similar among the figure indicate with identical parameter word as far as possible.
Figure 1A has shown sectional view according to illuminator first embodiment of the present invention with the form of simplifying very much.Illuminator comprises a plurality of R, G, B light emitter, as a plurality of light emitting diodes (LED).LED can be the light emitter of different base colors, as the well-known red R in Fig. 1 example, and green G, blue B light emitter.Perhaps, light emitter also can be amber, peony, and blue-green is as primary colours.These primary colours can directly be produced by light-emitting diode chip for backlight unit, and also the photoirradiation that can be sent by light emitting diode is on phosphor and produce.Under latter event, can be color mixture or white as a kind of primary colours.In the figure example shown, R, G, BLED are mounted on (metal-cored) printed circuit board (PCB) 5.In general, LED has quite high source brightness.Produce the light time when excitation LED under rated power and room temperature unites, each LED institute tool radiation power output is 100 milliwatts at least.LED with high output like this is also become the LED power packages.Use the characteristics of the high output of high-level efficiency like this LED to be: when demand was exported than higher light, the quantity of LED can be less relatively.This compactedness and efficient for illuminator to be made has positive effect.If the LED power packages is mounted on this kind (metal-cored) printed circuit board (PCB) 5, the heat of LED generation just can lose easily by the heat conduction of PCB so.In a kind of advantageous embodiment of illuminator, (metal-cored) printed circuit board (PCB) 5 contacts with the shell (not indicating among the figure) of illuminator via the heat conduction connection.So-called naked power LED chip preferentially is installed in a substrate, and as the insulated metal sheet, silicon chip is on potsherd or the composite sheet.Substrate provides and being electrically connected of chip, but also as the good heat transfer section so that give heat exchanger with heat delivered.
The embodiment of illuminator shown in Figure 1A comprise a plurality of light- collimating sections 12,12 ', 12 ", a light-mixing section 3.Light- collimating sections 12,12 ', 12 " longitudinal axis 25 along illuminator is installed in parallel with each other basically.More precisely, each section all has a rotation axes of symmetry, and these cardinal principles are parallel to each other in the longitudinal axis 25.Each light- collimating sections 12,12 ', 12 " all interrelate with light emitter R, G, a B at least.In Figure 1A example shown, single ledly interrelate with each light-collimating sections respectively.This can be a large amount of LED with identical primary colours, also can be a large amount of LED with two or more primary colours.
According to the present invention, each light emitter R, G, B all by a kind of refractive index more than or equal to 1.3 dielectric material respectively with light-collimating sections 12,12 ', 12 " light contacts.Light- collimating sections 12,12 ', 12 " are made by on-gaseous light transmission medium material.
According to the present invention, a plurality of light-collimating sections 12,12 ', 12 " have formed single integral body with light-mixing section 3.For this reason, light-collimating sections 12,12 ', 12 " incorporate in the light-mixing section 3 in a side that deviates from light emitter R, G, B.Since avoided light-collimating sections 12,12 ', 12 " with the boundary, surface of 3 of light-mixing section, the propagation efficiency of light in illuminator of the present invention strengthened greatly.Since light-collimating sections 12,12 ', 12 " form single medium material with light-mixing section 3, thereby have avoided the so-called Fresnel reflection loss of intersection.
According to the present invention, light in the light-mixing section 3 of illuminator is propagated and is based on that total internal reflection carries out, and this has been avoided the light loss in the light-mixing section 3 greatly.Figure 1A has shown several examples of the light that light emitter R, G, B send.
In addition, light-mixing section 3 includes a plurality of faces that are parallel to the longitudinal axis 25, thereby mix with the oblique angle in the space that has excited light emitter R, G, B to send light.If for light-mixing section is equipped with a roughly outside surface of circular arc, so possibility excitation light emission body is sent the space of light and mix.Be preferably light-mixing section 3 and be equipped with four or six faces.So the face of number makes light space mixing well and the space-oblique angle mixing that light emitter sends.
By LED base optical generator just can be combined two kinds of functions of illuminator with the whole optical device composite construction that is made of single amboceptor.That is: make optical alignment; The light that a plurality of led chips are sent carry out the space mix with/or the oblique angle mix.Light-collimating sections 2 is preferentially made by an acryhic material or glass with light-mixing section 3.Preferentially light-collimating sections directly around the casting on light emitter, perhaps between light emitter and light-collimating sections, load onto sealant.Because the actual loss of the total internal reflection in light-collimating sections and the light-mixing section is low, the system effectiveness of foundation illuminator of the present invention is improved.In addition, because light-collimating sections and light-mixing section form a whole dielectric, may cause the interface of the unnecessary loss of illuminator efficient to reduce.By the quantity of minimizing optics, and, be economically viable therefore according to illuminator of the present invention because whole optical device are made into a whole injection molded.
In Figure 1A example shown, illuminator matches with light guide therefor 20, and light guide therefor is light transmitting fiber or other light guide therefor also.Also can be that it is equipped with other light shaping optical device.Optical conductor can have by the predetermined way emitting characteristics, and is luminous equably such as the side from optical component.In a kind of alternative embodiment, the light that illuminator of the present invention is sent can be used to illuminate backlight illuminating system, such as being used for (image) display, as television receiver and stigmatometer.The Another Application field of illuminator is exactly projects images or a display of television programmes in digital projector or so-called beam instrument among the present invention, film, when video frequency program and DVD or the like as light source.Another Application field according to illuminator of the present invention is exactly at luminous application of direct-view such as icon.Light watt.Be used as light source in outline lighting or other.Another Application field according to illuminator of the present invention is to make light enter light guide therefor as end emission or side-emitted optical fiber or fibre bundle with illuminator.
Can be light-collimating sections 12,12 ', 12 " part outside surface is made reflexible or is that it is equipped with reflection horizon (not showing among Figure 1A); the reflection horizon contacts with the medium of light-collimating sections; perhaps emission layer as the element that can contact with light-collimating sections; so a part of light just reflects by total internal reflection, and the other part light that transmits is just reflected by the external reflection device.In Fig. 2 A, because light-collimating sections 12,12 ', the 12 " propagation of interior light.Avoided like this owing to any loss of causing of reflection, and when light is propagated by light-collimating sections and light-mixing section, can be used as catoptrical favourable mechanism.Make that for the part light-collimating sections is equipped with the reflection horizon distance between light-collimating sections is littler, i.e. light source assembling is compacter, and this has just reduced the whole size of system significantly.In this kind embodiment, preferentially be designed to so-called compound parabolic concentrator (CPC) to the small part light-collimating sections.The collimation of light preferentially is subject to the angle of propagation of relative optical axis in the light-collimating sections, thereby when the sidewall with light-mixing section interacted, these light just in time were in the scope of total internal reflection.So, just the length of the certain inhomogeneity light-mixing section of demand can be reduced to minimum, obtain minimum overall system dimensions.In a kind of alternative embodiment, the shape of light-collimating sections is similar in appearance to compound parabolic concentrator, but incomplete same.
If suitably select light-mixing section 3 sizes, just can promote that the light in the light-mixing section 3 mixes.Along the length 1ms of the light-mixing section 3 that is parallel to the longitudinal axis 25 orientation measurements and the characteristic dimension of light-mixing section 3 thickness.The ratio that is light-mixing section diameter d ms is preferentially in following scope:
3.5＝＜(1ms/dms)＜＝10。
The optimal numerical value of 1ms/dms is about 5.
Figure 1B and Fig. 1 C are the skeleton views of two kinds of alternative embodiment of the light-collimating sections of illuminator shown in Figure 1A and light-mixing section.Figure 1B has shown a kind of embodiment of light-collimating sections 2 and light-mixing section 3, and wherein light-mixing section 3 comprises four faces.Fig. 1 C has shown a kind of embodiment of light-collimating sections 2 and light-mixing section 3, and wherein light-mixing section 3 comprises six faces.In two embodiment, all faces all are parallel to the longitudinal axis 25.In Figure 1B and Fig. 1 C, light-mixing section 3 is made by single piece of dielectric material.Figure 1B and Fig. 1 C have very schematically marked light emitter R, G, B.
Fig. 2 has shown sectional view according to illuminator second embodiment of the present invention in very schematic mode.In embodiment illustrated in fig. 2, a side that deviates from light emitter R, G, B in light-mixing section 3 is equipped with additional light-collimating sections 15 so that the optical alignment that light emitter is sent.Because additional light-collimating sections 15 has been arranged, the collimation of the light that illuminator is sent is able to further improvement.In addition, additional light-collimating sections 15 further makes the numerical aperture of the beam alignment attachment optical system that illuminator sends effectively.In example shown in Figure 2, additional light-collimating sections 15 comprises a taper shape that expands from light-mixing section 3.Additional light-collimating sections 15 is polyhedral, as embodiment as described in Figure 1B and the 1C, and/or additional light-collimating sections 15 is shaped according to compound parabolic concentrator basically.
LED comes radiation according to complete semisphere or most sphere usually.The optical alignment that uses lens that little light emitter like this is sent just means the light that only can effectively utilize a quite little part to generate.It is a kind of that almost to improve effective collimator be so-called compound parabolic concentrator (CPC) or extremely approximate collimator.Because in general the LED surface is heterogeneous radiation really, and may use the LED of different color, so just be necessary to take extra homogenization step.Space mixes, and the integrator rod that is positioned at the light-collimating sections top is a kind of selection.Can be merged into (plastics) element to CPC and integrator rod.Use a CPC relatively, it is favourable using two CPC.In this kind configuration, additional light-collimating sections can be between two CPC.Because light beam is handled and fully homogenization through collimator in little integrator rod part, so device will be littler.The 2nd CPC preferentially makes the required numerical aperture of beam alignment with rear optical system.
In embodiment illustrated in fig. 2, illuminator comprises a holographic diffuser 17.Holographic diffuser is preferably randomized holographic diffuser.The main effect of holographic diffuser is exactly to obtain basic space uniformly and oblique angle COLOR COMPOSITION THROUGH DISTRIBUTION and light to distribute.
Should be noted in the discussion above that the foregoing description is to be used to set forth the present invention, rather than restriction the present invention.Those personnel that are proficient in technology can not design a large amount of alternative embodiment under the situation departing from accessory claim book scope.In claims, any reference symbol in the parenthesis should not thought to be used for requirement for restriction power.Verb " comprises " and conjugation is not got rid of key element or the step of claim outside described.The front refers to that the speech " " of an element do not get rid of the existence of a plurality of this kind elements.The present invention can be carried out and implemented by the computing machine of hardware that comprises some different elements and suitably programming.Enumerated multiple device in the claim, can carry out by an identical hardware for some of these devices.Only fact is exactly that some measure of stating in mutually different independent claims do not represent can not be with these measure advantage combinations.
Claims (13)
1, a kind of illuminator, it comprises:
A plurality of (2) light-collimating sections (12,12 ', 12 ") and a light-mixing section (3);
Light-collimating sections (12,12 ', 12 ") are installed in parallel with each other basically along the longitudinal axis (25) of illuminator;
Each light-collimating sections (12,12 ', 12 ") interrelate with a light emitter (R, G, B) at least;
Each light emitter (R, G, B) by dielectric material respectively with light-collimating sections (12,12 ', 12 ") light contact, the refractive index of dielectric material is more than or equal to 1.3;
At a side place that deviates from light emitter (R, G, B), light-collimating sections (12,12 ', 12 ") are incorporated light-mixing section (3) into;
Light-collimating sections (12,12 ', 12 ") and light-mixing section (3) form an integral body (1);
The propagation of light in light-mixing section (3) is based on that total internal reflection carries out;
Light-mixing section (3) has a plurality of faces that are parallel to the longitudinal axis (25).
2, according to the described illuminator of claim 1, the ratio that wherein is parallel to the length l ms of light-mixing section (3) of the longitudinal axis (25) and light-mixing section (3) diameter d ms is in following scope:
3.5＝＜(lms/dms)＜＝10。
3, according to claim 1 or 2 described illuminators, wherein light-collimating sections (12,12 ', the part outside surface of 12 ") has reflectivity or the reflection horizon is housed.
4, according to the described illuminator of claim 3, wherein the reflecting surface of light-collimating sections is shaped according to compound parabolic concentrator basically.
5, according to claim 1 or 2 described illuminators, wherein light light-collimating sections (12,12 ', the propagation in 12 ") is based on that total internal reflection carries out.
6, according to claim 1 or 2 described illuminators, wherein light-mixing section (3) has four or six faces.
7, according to claim 1 or 2 described illuminators, light-mixing section (3) is equipped with an additional light-collimating sections (15) in a side that deviates from light emitter (R, G, B).
8, according to the described illuminator of claim 7, wherein additional light-collimating sections (5) comprises a taper shape that expands from light-mixing section (3).
9, according to the described illuminator of claim 7, wherein additional light-collimating sections (15) is polyhedral.
10, according to the described illuminator of claim 6, wherein additional light-collimating sections (15) is shaped according to compound parabolic concentrator basically.
11, according to claim 1 or 2 described illuminators, wherein illuminator comprises a holographic diffuser (17), and holographic diffuser (17) is contained in the outgoing window place of illuminator or the outgoing window place of illuminator light-mixing section.
12, according to claim 1 or 2 described illuminators, wherein light emitter comprises that at least one has first light emitting diode (R) of first primary colours, at least one has second light emitting diode (R) of second primary colours, at least one has the 3rd light emitting diode (R) of three primary colours, and these three kinds of primary colours have nothing in common with each other.
13, according to the described illuminator of claim 12, wherein when encouraging under rated power, the tool radiation power output of each light emitting diode (R, G, B) institute is 100 milliwatts at least.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP04104639 | 2004-09-24 | ||
| EP04104639.2 | 2004-09-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101027579A true CN101027579A (en) | 2007-08-29 |
Family
ID=35427474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2005800322521A Pending CN101027579A (en) | 2004-09-24 | 2005-08-18 | Illumination system |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US7506998B2 (en) |
| EP (1) | EP1794630B1 (en) |
| JP (1) | JP2008515138A (en) |
| CN (1) | CN101027579A (en) |
| TW (1) | TW200639518A (en) |
| WO (1) | WO2006033029A1 (en) |
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Also Published As
| Publication number | Publication date |
|---|---|
| TW200639518A (en) | 2006-11-16 |
| US20070263383A1 (en) | 2007-11-15 |
| JP2008515138A (en) | 2008-05-08 |
| EP1794630B1 (en) | 2014-10-08 |
| EP1794630A1 (en) | 2007-06-13 |
| US7506998B2 (en) | 2009-03-24 |
| WO2006033029A1 (en) | 2006-03-30 |
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